Figure 1From: Serotoninergic modulation of cortical and respiratory responses to episodic hypoxia Changes in peak amplitude of integrated activity of phrenic (A Phr) and hypoglossal (HG) nerve and respiratory frequency (f) evoked 5 min after systemic injection of DOI and ketanserin (KS). Effects were calculated as a percent of control before administration of agents. All effects were significant, P < 0.05. Values are means ± SE, n = 8.Back to article page